ClipBucket v5 <= 5.5.2 - Unauthenticated Blind SQL Injection
CVE-2026-21875
Verified
Description
ClipBucket v5.5.2-#187 and below contain a blind SQL injection caused by unsanitized obj_id parameter in /actions/ajax.php used in user_exists function, letting attackers perform blind SQL injection remotely, exploit requires crafted POST request.
Severity
Critical
CVSS Score
9.8
Exploit Probability
2%
Affected Product
clipbucket
Published Date
September 1, 2026
Template Author
str4k3r, 0x_akoko
CVE-2026-21875.yaml
9.8Score
CVSS Metrics
CVSS Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE ID:
cve-2026-21875
CWE ID:
cwe-89
Remediation Steps
Update to the latest version once a fix is available.